Actions
All four quadriceps are powerful extensors of the knee joint. They are crucial in walking, running, jumping and squatting. Because rectus femoris attaches to the ilium, it is also a flexor of the hip. This action is also crucial to walking or running as it swings the leg forward into the ensuing step. The quadriceps, specifically the vastus medialis, plays the important role of stabilizing the patella and the knee joint during gait.
Read more about this topic: Quadriceps Femoris Muscle
Famous quotes containing the word actions:
“Hence a young man is not a proper hearer of lectures on political science; for he is inexperienced in the actions that occur in life, but its discussions start from these and are about these; and, further, since he tends to follow his passions, his study will be vain and unprofitable, because the end aimed at is not knowledge but action.”
—Aristotle (384–322 B.C.)
“Only the actions of the just
Smell sweet and blossom in their dust.”
—James Shirley (1596–1666)
“Throughout my life, I have seen narrow-shouldered men, without a single exception, committing innumerable stupid acts, brutalizing their fellows and perverting souls by all means. They call the motive for their actions fame.”
—Isidore Ducasse, Comte de Lautréamont (1846–1870)